Pioneer A-7 Servis Kılavuzu - Sayfa 3

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2.FRONT

PANEL

FACILITIES

NON SWITCHING ANE

W PIONEER

sTEREO

ameUFIER

4-7

() POWER SWITCH

Power is supplied to the stereo amplifier as soon as this

switch is depressed to the ON position.

The power is turned off when the switch is released to the

OFF position. As soon as the power switch has been set to

ON, the muting circuit is actuated, the PROTECTION-RED

indicator lights up red/and after about 6 seconds when the

muting circuit is released, the indicator goes from red to

green.

(2) TREBLE CONTROL

This is used to adjust the treble (high-frequency

range)

sound.

Rotate this control with the LINE STRAIGHT-OFF

switch set to the depressed position. The treble is emphasiz-

ed when the control is rotated clockwise from its center posi-

tion and attenuated when it is rotated counterclockwise.

3) BASS CONTROL

This is used to adjust the bass (low-frequency range) sound.

Rotate this control with the LINE STRAIGHT-OFF switch set

to the depressed position. The bass is emphasized when the

control is rotated clockwise from its center position and at-

tenuated when it is rotated counterclockwise.

(4) FUNCTION SWITCHES

These are used to select the sound source. At the left of each

switch is a symbol function indicator which lights when the

corresponding switch

has been depressed.

This indicates

that the lighted function has been selected.

PHONO:

Depress for playing records on a turntable con-

nected to the PHONO jacks.

TUNER:

Depress for listening to a program on a tuner

connected to the TUNER jacks.

AUX:

Depress for listening to the sound from a stereo

component connected to the AUX jacks.

TAPE

Depress to listen to a tape in a tape deck con-

nected to the TAPE

1 jacks or to monitor a

recording.

TAPE 2:

Depress to listen to a tape in a tape deck con-

nected to the TAPE 2 jacks or to monitor a

recording.

NOTE:

Depress only one FUNCTION switch at a time. The desired pro-

gram source may not be selected if two or more switches are

depressed at the same time.

This is used to adjust the volume of sound heard through the

speakers or headphones. No sound is heard when it is set to

the ''0' position. To increase the volume, rotate this control

slowly clockwise (().

©) MUTING

-20 dB SWITCH

The volume is attenuated by —20 dB when this switch is

depressed to the ON position (MUTING indicator lights). The

switch can be used effectively when the stylus descends on-

to the record during record play, when the sound is to be

turned down temporarily and when you want to adjust the

sound precisely as you listen to a program source under low

sound level conditions.

@ PHONES JACK

Connect the plug on your headphones to this jack when

listening to a program in private.

To listen to a program through the headphones,

release

both the SPEAKERS A and B switches.